US4820142A - Apparatus for making a spun-filament fleece - Google Patents
Apparatus for making a spun-filament fleece Download PDFInfo
- Publication number
- US4820142A US4820142A US07/119,141 US11914187A US4820142A US 4820142 A US4820142 A US 4820142A US 11914187 A US11914187 A US 11914187A US 4820142 A US4820142 A US 4820142A
- Authority
- US
- United States
- Prior art keywords
- fleece
- air
- shaft
- thickness
- spun
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
- D04H3/033—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random reorientation immediately after yarn or filament formation
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
Definitions
- My present invention relates to an apparatus for making a spun-filament fleece or mat from a synthetic-resin filament.
- a apparatus for making spun-filament fleece for making a spun-filament fleece comprising a spinning nozzle system or spinneret, a cooling shaft for the continuous spun filament, a stretching gap (e.g. a venturi passage in which air flow is accelerated), a diffuser shaft, a continuously moving fleece receiving conveyor and a device for feeding process air and for drawing outflowing air through the fleece receiving conveyor.
- the cooling shaft has a shaft wall provided with a plurality of air orifices and process air required for cooling can be introduced through the air orifices to provide an air flow.
- the air flow is at least partially drawn through the fleece receiving conveyor.
- the process parameters such as the flow rates of thermoplastic material and process air the transport speed of the fleece receiving conveyor and the geometric parameters of the apparatus for making a spun-filament fleece are set up in practice so that the spun-filament fleece has a thickness, or surface weight (area weight), which is as uniform and exact as possible.
- the features of the known process and/or in the apparatus for making spun-filament fleece to successfully correct or even regulate the thickness variations of the spun-filament fleece or the deviations from a uniform thickness.
- a apparatus comprising a spinning nozzle system or spinneret, a cooling shaft, a stretching gap, a diffuser shaft, a continuously moving fleece receiving conveyor upon which the nonwoven mat is deposited and a device for feeding process air and for drawing outflowing air through the fleece receiving conveyor.
- the cooling shaft has a shaft wall provided with a plurality of air orifices and process air required for cooling can be introduced through the air orifices to provide an air flow. The air flow is at least partially drawn through the fleece receiving conveyor.
- the fleece receiving conveyor which is for example a wire screen conveyor, is equipped with a thickness measuring device for the thickness of the spun-filament fleece which is measured or ascertained as an average value, or at discrete points over the entire width of the spun-filament fleece, and at least one air control flap with a horizontal pivot axis is positioned upstream of the stretching gap whose setting angle is adjustable against the air flow direction according to the deviation of the measured value and/or values of the thickness from a setpoint value or values of the thickness.
- air control flaps are provided which are synchronously adjustable in mirror symmetrical relation.
- the air control flap or flaps can be elastically deformable and adjustable to different setting angles over their entire lengths respectively. This provides a control on the uniformity of the spun-filament fleece thickness across the width of the mat.
- the adjustment of the air control flaps can be performed from time to time considering the described measured values, for example by manual control.
- the thickness measurement device and the air control flaps are provided in a feedback control loop which has a suitable servomotor drive and to which adjustable setpoint values of the spun-filament fleece thickness are associated.
- An advantage of my invention is such that deviations of the thickness of the spun-filament fleece from a predetermined set value can be corrected in an easy way in the apparatus for making spun-filament fleece and thus a very exact and uniform thickness distribution is attained.
- the device or apparatus according to my invention in an easy way a particularly desirable process for making a spun-filament fleece is realized which permits the thickness of the spun-filament fleece on the fleece receiving conveyor to be measured in the transport direction downstream of the diffuser shaft and that measured value to be compared with a set value. On deviation of the measured value from the setpoint value the setting angles of the air control flaps which are positioned at the entrance of the stretching gap are varied.
- the spun-filament fleece device according to my invention does not differ substantially in its cost from the existing device because in addition only the measuring device and the air control flaps need be provided.
- the manufactured product, namely the spun-filament fleece made from a synthetic endless filament is noticeably improved in its quality.
- FIG. 1 is a perspective view of a vertically cutaway portion of a apparatus for making spun-filament fleece according to my invention.
- FIG. 2 is a vertical cross sectional view of the apparatus for making spun-filament fleece of FIG. 1 corresponding to the portion 11 indicated by the dot-dash line in FIG. 1 and drawn to a larger scale.
- the device or apparatus shown in the drawing produces a spun-filament fleece 1 made from endless synthetic filament 2.
- This device comprises a spinning nozzle system or spinneret 3, a cooling shaft 4, a stretching gap 5, a diffuser shaft 6 and a fleece delivery conveyor 7.
- devices 8, 9 for feeding process air and for drawing outgoing air through the fleece receiving conveyor 7 are provided.
- the cooling shaft 4 has a shaft wall 11 provided with a plurality of air orifices 10.
- the shaft wall 11 can also be formed as a flow directing device in the shape of a screen. Because of that process air required for cooling can be introduced into the cooling shaft 4.
- the cooling shaft 4 has an upper intensive cooling region 12 and a lower additional cooling region 13 as well as suitable air flow dividing guiding walls or baffles 14 connected to the shaft wall 11.
- the air flow dividing guiding walls 14 are of adjustable height and the height of the intensive cooling region 12 is adjustable because of that height adjustability.
- Air control flaps 15 converging like a wedge in the feed direction of the endless filaments 2 connected to the shaft wall 11 are connected in series with the stretching gap 5.
- These flaps 15 have an outlet gap 16 which opens to the stretching aperture 5.
- the gap 5 has a venturi configuration through which air is accelerated to effect the stretching of the filaments emerging from the spinneret.
- the air control flaps 15 have an outlet gap 16 which opens to the stretching gap 5.
- These air control flaps 15 have an adjustable setting angle a and are movable about a horizontal axis 17 as is indicated in the figure by curved arrows.
- the device is designed so that the setting angle a and thus the width of the outlet gap 16 is adjustable differently over the entire length of the air control flaps 15.
- suitable (e.g. servomotor) positioning elements can be provided and the flaps are flexible.
- the diffuser shaft 6 is provided with pivotable flaps 18 defining the flow cross section and which are each movable about a horizontal axis 19. They are positioned above each other in the example in several steps and are adjustable independently of each other. Also they can be set at different setting angles with suitable positioning elements.
- the device 9 for drawing outflowing air includes an adjustable damper 20 above and/or below the fleece receiving conveyor 7 with which the width of the outflowing, air flow measured in the transport direction of the fleece receiving conveyor 7 is adjustable. It can be operated with a closed or partially closed air flow for the process air and for the outflowing air.
- the apparatus according to my invention does not operate with three separate air flows but with a single process air flow which, as described, is divided into a partial flow of air for the intensive cooling region 12 and a partial air flow for the additional cooling region 13.
- the thickness of the spun-filament fleece 1 is thus measured over the entire spun-filament fleece width or at discrete measuring points x 1 ,x 2 , . . . ,x n .
- the air control flaps 15 positioned upstream of the stretching gap 5, which have a horizontal pivot axis 17, are adjustable in regard to their setting angle a against the air flow according to the variation of the actual measured value of the thickness from a desired setpoint value.
- two opposing air control flaps 15 are positioned which are synchronously adjustable.
- the air control flaps 15 are elastically deformable and consequently can be set at different setting angles over their entire length and of course at y 1 ,y 2 , . . . ,y n corresponding to the measured points x 1 ,x 2 , . . . . ,x n .
- FIG. 2 the different servomotor drives 22 are indicated as blocks.
- the thickness measuring device 21, the servomotor drives 22 of the air control flaps 15 with which the setting angle a is adjustable and the setpoint value adjustment are part of a feedback control loop 23 which is shown in FIG. 2.
- a controller 24 with a setpoint value setting device 25 is also part of the feedback control loop 23. As a result a thickness control and thus a control of the surface weight occurs.
- the thickness of the spun-filament fleece 1 on the fleece receiving conveyor 7 is measured in the transport direction downstream of the diffuser shaft 6.
- the measured value is compared with a predetermined setpoint value and the setting angles a of the air control flaps 15 which are located at the entrance of the stretching gap 5 are changed with the deviation of the measured value from the desired setpoint value.
- the setting angle a is increased with a positive deviation from the setpoint value (measured value greater than the setpoint value), but decreased with a negative deviation from the setpoint value (measured value less than the setpoint value).
- the device for feeding process air includes the adjustable damper 20, the shaft wall 11, the air baffles 14 and an air blower or pump (not shown).
Abstract
Description
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3713862 | 1987-04-25 | ||
DE19873713862 DE3713862A1 (en) | 1987-04-25 | 1987-04-25 | METHOD AND SPINNED FLEECE SYSTEM FOR PRODUCING A SPINNED FLEECE FROM SYNTHETIC CONTINUOUS FILAMENT |
Publications (1)
Publication Number | Publication Date |
---|---|
US4820142A true US4820142A (en) | 1989-04-11 |
Family
ID=6326276
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/119,141 Expired - Fee Related US4820142A (en) | 1987-04-25 | 1987-11-10 | Apparatus for making a spun-filament fleece |
US07/119,400 Expired - Fee Related US4820459A (en) | 1987-04-25 | 1987-11-10 | Process for making spun-filament fleece from endless synthetic resin filament |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/119,400 Expired - Fee Related US4820459A (en) | 1987-04-25 | 1987-11-10 | Process for making spun-filament fleece from endless synthetic resin filament |
Country Status (12)
Country | Link |
---|---|
US (2) | US4820142A (en) |
JP (2) | JPS63275763A (en) |
KR (2) | KR910006434B1 (en) |
BR (2) | BR8706049A (en) |
CA (2) | CA1288566C (en) |
DE (1) | DE3713862A1 (en) |
DK (2) | DK172788A (en) |
FI (2) | FI881297A (en) |
GB (2) | GB2203763B (en) |
IT (2) | IT1217376B (en) |
NO (2) | NO881400L (en) |
SE (2) | SE8801257L (en) |
Cited By (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5013229A (en) * | 1988-12-08 | 1991-05-07 | G. Siempelkamp Gmbh & Co. | Mat-making apparatus for particleboard manufacture |
US5098636A (en) * | 1989-08-18 | 1992-03-24 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric |
US5236641A (en) * | 1991-09-11 | 1993-08-17 | Exxon Chemical Patents Inc. | Metering meltblowing system |
US5435708A (en) * | 1992-11-13 | 1995-07-25 | Reifenhauser Gmbh & Co. Maschinenfabrik | Nozzle head for a meltblowing aparatus |
US5445509A (en) * | 1990-10-17 | 1995-08-29 | J & M Laboratories, Inc. | Meltblowing die |
US5460500A (en) * | 1993-04-16 | 1995-10-24 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for producing a nonwoven spun-filament web of aerodynamically stretched filament of a plastic |
US5487655A (en) * | 1993-04-15 | 1996-01-30 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of and apparatus for producing a spun filament web |
US5648041A (en) * | 1995-05-05 | 1997-07-15 | Conoco Inc. | Process and apparatus for collecting fibers blow spun from solvated mesophase pitch |
US5667749A (en) * | 1995-08-02 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Method for the production of fibers and materials having enhanced characteristics |
US5702730A (en) * | 1995-05-26 | 1997-12-30 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for making a continuous thermoplastic fleece |
US5711970A (en) * | 1995-08-02 | 1998-01-27 | Kimberly-Clark Worldwide, Inc. | Apparatus for the production of fibers and materials having enhanced characteristics |
US5766646A (en) * | 1995-06-13 | 1998-06-16 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for making a fleece from continuous thermoplastic filaments |
US5800840A (en) * | 1995-02-15 | 1998-09-01 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for producing a spun-bond web from thermosplastic endless filaments |
US5811178A (en) * | 1995-08-02 | 1998-09-22 | Kimberly-Clark Worldwide, Inc. | High bulk nonwoven sorbent with fiber density gradient |
US5913329A (en) * | 1995-12-15 | 1999-06-22 | Kimberly-Clark Worldwide, Inc. | High temperature, high speed rotary valve |
US6062838A (en) * | 1995-11-30 | 2000-05-16 | Rieter-Automatik Gmbh | Melt spinning apparatus |
US6164948A (en) * | 1998-05-08 | 2000-12-26 | Kimberly-Clark Worldwide, Inc. | Extrusion die system with removable insert |
US6379136B1 (en) * | 1999-06-09 | 2002-04-30 | Gerald C. Najour | Apparatus for production of sub-denier spunbond nonwovens |
WO2002097182A1 (en) * | 2001-05-31 | 2002-12-05 | Rieter Perfojet | Installation for producing a nonwoven web with very uniform weight |
US20030057586A1 (en) * | 2001-09-26 | 2003-03-27 | Bba Nonwovens Simpsonville, Inc. | Apparatus and method for producing a nonwoven web of filaments cross-reference to related application |
US20030147982A1 (en) * | 2002-02-07 | 2003-08-07 | Nordson Corporation | Forming system for the manufacture of thermoplastic nonwoven webs and laminates |
US20030178741A1 (en) * | 2001-04-06 | 2003-09-25 | Minoru Hisada | Production method and device for nonwoven fabric |
US6705852B2 (en) * | 2000-06-21 | 2004-03-16 | Toray Engineering Company, Limited | Melt spinning apparatus |
US20050087287A1 (en) * | 2003-10-27 | 2005-04-28 | Lennon Eric E. | Method and apparatus for the production of nonwoven web materials |
US20050107530A1 (en) * | 2003-11-14 | 2005-05-19 | Sudhin Datta | Transparent and translucent crosslinked propylene-based elastomers, and their production and use |
US6966762B1 (en) * | 1999-04-23 | 2005-11-22 | Rieter Perfojet | Device for opening and distributing a bundle of filaments when producing a nonwoven textile web |
US20070284776A1 (en) * | 2001-04-06 | 2007-12-13 | Mitsui Chemicals, Inc. | Method and apparatus for manufacturing nonwoven fabric |
US20080093778A1 (en) * | 2006-10-18 | 2008-04-24 | Polymer Group, Inc. | Process and apparatus for producing sub-micron fibers, and nonwovens and articles containing same |
US20080182116A1 (en) * | 2007-01-26 | 2008-07-31 | Narayanaswami Raja Dharmarajan | Elastomeric laminates for consumer products |
US20080230943A1 (en) * | 2007-03-19 | 2008-09-25 | Conrad John H | Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit |
US20090004313A1 (en) * | 2007-06-29 | 2009-01-01 | Hans-Georg Geus | Apparatus for making a spunbond web |
US20090053959A1 (en) * | 2007-08-21 | 2009-02-26 | Sudhin Datta | Soft and Elastic Nonwoven Polypropylene Compositions |
US20100062672A1 (en) * | 2006-12-15 | 2010-03-11 | Fare' S.P.A. | Apparatus and process for the production of a non-woven fabric |
EP2778270A1 (en) | 2013-03-15 | 2014-09-17 | Fibertex Personal Care A/S | Nonwoven substrates having fibrils |
DE102014103393A1 (en) | 2013-03-15 | 2014-09-18 | The Procter & Gamble Company | nonwoven substrates |
WO2014145608A1 (en) | 2013-03-15 | 2014-09-18 | The Procter & Gamble Company | Packages for articles of commerce |
WO2014150303A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Absorbent articles with nonwoven substrates having fibrils |
WO2014150316A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Wipes with improved properties |
WO2014151480A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Methods for forming absorbent articles with nonwoven substrates |
WO2016192097A1 (en) | 2015-06-05 | 2016-12-08 | Exxonmobil Chemical Patents Inc. | Spunbond fabrics comprising propylene-based elastomer compositions and methods thereof |
US20180105956A1 (en) * | 2016-10-18 | 2018-04-19 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Method and apparatus for making a fiber fleece |
CN110541206A (en) * | 2018-05-28 | 2019-12-06 | 赖芬豪泽机械工厂有限及两合有限公司 | Apparatus and method for making spunbond nonwoven fabrics from continuous filaments |
EP3581373A1 (en) | 2012-10-16 | 2019-12-18 | AVINTIV Specialty Materials Inc. | Multi-zone spinneret, apparatus and method for making filaments and nonwoven fabrics therefrom |
WO2020139492A1 (en) | 2018-12-27 | 2020-07-02 | Exxonmobil Chemical Patents Inc. | Propylene-based spunbond fabrics with faster crystallization time |
US10844529B2 (en) | 2016-05-02 | 2020-11-24 | Exxonmobil Chemicals Patents Inc. | Spunbond fabrics comprising propylene-based elastomer compositions and methods for making the same |
WO2022087250A1 (en) | 2020-10-22 | 2022-04-28 | Exxonmobil Chemical Patents Inc. | Carbon fibers and related continuous production methods |
WO2022108973A1 (en) | 2020-11-23 | 2022-05-27 | Exxonmobil Chemical Patents Inc. | Metallocene polypropylene prepared using aromatic solvent-free supports |
EP4124685A1 (en) * | 2021-07-30 | 2023-02-01 | Ramina S.R.L. | Plant for producing non-woven fabric |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3713861A1 (en) * | 1987-04-25 | 1988-11-10 | Reifenhaeuser Masch | METHOD AND SPINNED FLEECE SYSTEM FOR PRODUCING A SPINNED FLEECE FROM SYNTHETIC CONTINUOUS FILAMENT |
DE3844283A1 (en) * | 1988-12-30 | 1990-07-12 | Reifenhaeuser Masch | Process and apparatus for the production of a spun web |
DE4014414C2 (en) * | 1990-05-04 | 1996-08-08 | Reifenhaeuser Masch | Plant for the production of a spunbonded nonwoven web from stretched plastic filaments |
US5123983A (en) * | 1990-08-24 | 1992-06-23 | E. I. Du Pont De Nemours And Company | Gas management system for closely-spaced laydown jets |
JPH0466479U (en) * | 1990-10-23 | 1992-06-11 | ||
DE4236514C2 (en) * | 1992-10-26 | 1997-03-27 | Fischer Karl Ind Gmbh | Method and device for conveying and depositing sheets of endless threads by means of air forces |
DE4414277C1 (en) * | 1994-04-23 | 1995-08-31 | Reifenhaeuser Masch | Spun-bonded fabric plant of higher process yield and transfer coefft. |
JP3658284B2 (en) * | 2000-07-05 | 2005-06-08 | ユニ・チャーム株式会社 | Nonwoven fabric manufacturing equipment |
US20030003834A1 (en) * | 2000-11-20 | 2003-01-02 | 3M Innovative Properties Company | Method for forming spread nonwoven webs |
US6607624B2 (en) | 2000-11-20 | 2003-08-19 | 3M Innovative Properties Company | Fiber-forming process |
EP1337703B1 (en) * | 2000-11-20 | 2009-01-14 | 3M Innovative Properties Company | Fiber-forming process |
US20030118816A1 (en) * | 2001-12-21 | 2003-06-26 | Polanco Braulio A. | High loft low density nonwoven webs of crimped filaments and methods of making same |
US7258758B2 (en) * | 2001-12-21 | 2007-08-21 | Kimberly-Clark Worldwide, Inc. | Strong high loft low density nonwoven webs and laminates thereof |
US20060040008A1 (en) * | 2004-08-20 | 2006-02-23 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Device for the continuous production of a nonwoven web |
US9139940B2 (en) | 2006-07-31 | 2015-09-22 | 3M Innovative Properties Company | Bonded nonwoven fibrous webs comprising softenable oriented semicrystalline polymeric fibers and apparatus and methods for preparing such webs |
US7807591B2 (en) * | 2006-07-31 | 2010-10-05 | 3M Innovative Properties Company | Fibrous web comprising microfibers dispersed among bonded meltspun fibers |
CN101636529B (en) * | 2007-01-19 | 2011-05-11 | 欧瑞康纺织有限及两合公司 | Apparatus and method for depositing synthetic fibers to form a non-woven web |
US20090068422A1 (en) * | 2007-09-07 | 2009-03-12 | Invista North America S.A.R.L. | Multilayer stretch nonwoven fabric composites |
WO2009032867A1 (en) * | 2007-09-07 | 2009-03-12 | Invista Technologies S.A.R.L. | Variable stretch nonwoven fabric composites |
US20090068420A1 (en) * | 2007-09-07 | 2009-03-12 | Invista North America S.A R.L. | Multilayer variable stretch nonwoven fabric composites |
US11313052B2 (en) * | 2015-08-14 | 2022-04-26 | The Board Of Regents Of The University Of Oklahoma | Melt blowing apparatus and method |
WO2020129256A1 (en) * | 2018-12-21 | 2020-06-25 | 三井化学株式会社 | Melt spinning apparatus and non-woven fabric production method |
CN110923824A (en) * | 2019-12-17 | 2020-03-27 | 南安凌卓文化创意有限公司 | Melt-blown non-woven fabric processing machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3812553A (en) * | 1971-11-08 | 1974-05-28 | Kendall & Co | Reorientation of fibers in a fluid stream |
DE2906618A1 (en) * | 1979-02-21 | 1980-08-28 | Werner Singendonk | Filament spinning shaft - having channels for air supply to modify airspeed profile to reduce filament tension |
US4442062A (en) * | 1977-03-15 | 1984-04-10 | Toa Nenryo Kogyo Kabushiki Kaisha | Process for producing melt-blown thermoplastic articles |
US4692106A (en) * | 1985-02-05 | 1987-09-08 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for stretching the individual strands of a bundle of fibers or threads |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2881471A (en) * | 1954-12-28 | 1959-04-14 | Owens Corning Fiberglass Corp | Apparatus for forming and treating fibers |
DE2048006B2 (en) * | 1969-10-01 | 1980-10-30 | Asahi Kasei Kogyo K.K., Osaka (Japan) | Method and device for producing a wide nonwoven web |
BE757537A (en) * | 1969-12-16 | 1971-03-16 | Barmag Barmer Maschf | WIRE TUNNEL |
CA944913A (en) * | 1970-04-01 | 1974-04-09 | Toray Industries, Inc. | Apparatus and method for manufacturing continuous filaments from synthetic polymers |
FR2085525B1 (en) * | 1970-04-29 | 1975-01-10 | Saint Gobain Pont A Mousson | |
US3969462A (en) * | 1971-07-06 | 1976-07-13 | Fiber Industries, Inc. | Polyester yarn production |
US3963392A (en) * | 1973-04-04 | 1976-06-15 | Johnson & Johnson | Apparatus for preparing air-laid nonwoven webs from combined streams |
FR2299438A1 (en) * | 1974-06-10 | 1976-08-27 | Rhone Poulenc Textile | PROCESS AND DEVICE FOR THE MANUFACTURE OF NON-WOVEN THERMOPLASTIC CONTINUOUS YARN TABLECLOTHS |
JPS517204A (en) * | 1974-07-09 | 1976-01-21 | Nippon Kami Pulp Kenkyusho | Kagakuparupuno seizoho |
JPS5332424B2 (en) * | 1974-07-25 | 1978-09-08 | ||
US3988086A (en) * | 1974-09-11 | 1976-10-26 | Allied Chemical Corporation | Melt spinning apparatus with convergence guide |
US4025595A (en) * | 1975-10-15 | 1977-05-24 | E. I. Du Pont De Nemours And Company | Process for preparing mixed filament yarns |
DE2658518C2 (en) * | 1976-12-23 | 1983-04-28 | Reifenhäuser KG, 5210 Troisdorf | Plant for the production of blown films made of thermoplastic material |
US4141772A (en) * | 1977-06-27 | 1979-02-27 | The Procter & Gamble Company | Method and apparatus for forming a continuous reinforced fibrous web |
US4217078A (en) * | 1977-06-27 | 1980-08-12 | The Procter & Gamble Company | Apparatus for forming a continuous reinforced fibrous web |
DE7926583U1 (en) * | 1979-09-17 | 1980-11-27 | Karl Fischer Industrieanlagen Gmbh, 1000 Berlin | SPINNING DEVICE FOR SPINNING ENDLESS THREADS |
US4340563A (en) * | 1980-05-05 | 1982-07-20 | Kimberly-Clark Corporation | Method for forming nonwoven webs |
US4285646A (en) * | 1980-05-13 | 1981-08-25 | Fiber Industries, Inc. | Apparatus for quenching melt-spun filaments |
US4388056A (en) * | 1981-07-06 | 1983-06-14 | The Procter & Gamble Company | Apparatus for continuously making an air-laid fibrous web having patterned basis weight distribution |
DE3309989A1 (en) * | 1983-03-19 | 1984-10-11 | Bayer Ag, 5090 Leverkusen | METHOD AND DEVICE FOR REDUCING THE SPEED OF FLOWING MEDIA |
DE3328358A1 (en) * | 1983-05-02 | 1985-02-21 | Hubert Dipl.-Ing. 4408 Dülmen Hergeth | WIDTH DISTRIBUTION SYSTEM IN A SLEEVE |
US4612150A (en) * | 1983-11-28 | 1986-09-16 | E. I. Du Pont De Nemours And Company | Process for combining and codrawing antistatic filaments with undrawn nylon filaments |
DE3400847C1 (en) * | 1984-01-12 | 1985-08-29 | Fa. Carl Freudenberg, 6940 Weinheim | Process for the production of spunbonded nonwovens from aerodynamically stretched threads |
DE3413595A1 (en) * | 1984-04-11 | 1985-10-24 | Hubert Dipl.-Ing. 4408 Dülmen Hergeth | Apparatus for producing a fleece from fibre flocks |
-
1987
- 1987-04-25 DE DE19873713862 patent/DE3713862A1/en active Granted
- 1987-07-14 GB GB8716502A patent/GB2203763B/en not_active Expired - Fee Related
- 1987-11-09 CA CA000551339A patent/CA1288566C/en not_active Expired - Fee Related
- 1987-11-09 CA CA000551338A patent/CA1285726C/en not_active Expired - Fee Related
- 1987-11-09 JP JP62281164A patent/JPS63275763A/en active Granted
- 1987-11-09 JP JP62281163A patent/JPS63275762A/en active Granted
- 1987-11-10 BR BR8706049A patent/BR8706049A/en unknown
- 1987-11-10 US US07/119,141 patent/US4820142A/en not_active Expired - Fee Related
- 1987-11-10 US US07/119,400 patent/US4820459A/en not_active Expired - Fee Related
- 1987-11-10 BR BR8706050A patent/BR8706050A/en unknown
- 1987-11-19 GB GB8727102A patent/GB2203765B/en not_active Expired - Fee Related
-
1988
- 1988-03-18 FI FI881297A patent/FI881297A/en not_active Application Discontinuation
- 1988-03-18 FI FI881296A patent/FI881296A/en not_active Application Discontinuation
- 1988-03-28 IT IT19995/88A patent/IT1217376B/en active
- 1988-03-28 IT IT19996/88A patent/IT1217377B/en active
- 1988-03-29 NO NO881400A patent/NO881400L/en unknown
- 1988-03-29 DK DK172788A patent/DK172788A/en active IP Right Grant
- 1988-03-29 NO NO881399A patent/NO881399L/en unknown
- 1988-03-29 DK DK172688A patent/DK172688A/en not_active IP Right Cessation
- 1988-04-04 KR KR1019880003764A patent/KR910006434B1/en not_active IP Right Cessation
- 1988-04-06 SE SE8801257A patent/SE8801257L/en not_active Application Discontinuation
- 1988-04-06 SE SE8801258A patent/SE8801258L/en not_active Application Discontinuation
- 1988-04-07 KR KR1019880003901A patent/KR910006433B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3812553A (en) * | 1971-11-08 | 1974-05-28 | Kendall & Co | Reorientation of fibers in a fluid stream |
US4442062A (en) * | 1977-03-15 | 1984-04-10 | Toa Nenryo Kogyo Kabushiki Kaisha | Process for producing melt-blown thermoplastic articles |
DE2906618A1 (en) * | 1979-02-21 | 1980-08-28 | Werner Singendonk | Filament spinning shaft - having channels for air supply to modify airspeed profile to reduce filament tension |
US4692106A (en) * | 1985-02-05 | 1987-09-08 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for stretching the individual strands of a bundle of fibers or threads |
Cited By (80)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5013229A (en) * | 1988-12-08 | 1991-05-07 | G. Siempelkamp Gmbh & Co. | Mat-making apparatus for particleboard manufacture |
US5098636A (en) * | 1989-08-18 | 1992-03-24 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric |
US5445509A (en) * | 1990-10-17 | 1995-08-29 | J & M Laboratories, Inc. | Meltblowing die |
US5236641A (en) * | 1991-09-11 | 1993-08-17 | Exxon Chemical Patents Inc. | Metering meltblowing system |
US5435708A (en) * | 1992-11-13 | 1995-07-25 | Reifenhauser Gmbh & Co. Maschinenfabrik | Nozzle head for a meltblowing aparatus |
US5487655A (en) * | 1993-04-15 | 1996-01-30 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of and apparatus for producing a spun filament web |
US5460500A (en) * | 1993-04-16 | 1995-10-24 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for producing a nonwoven spun-filament web of aerodynamically stretched filament of a plastic |
US5800840A (en) * | 1995-02-15 | 1998-09-01 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for producing a spun-bond web from thermosplastic endless filaments |
US5648041A (en) * | 1995-05-05 | 1997-07-15 | Conoco Inc. | Process and apparatus for collecting fibers blow spun from solvated mesophase pitch |
US5702730A (en) * | 1995-05-26 | 1997-12-30 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for making a continuous thermoplastic fleece |
US5766646A (en) * | 1995-06-13 | 1998-06-16 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for making a fleece from continuous thermoplastic filaments |
US5667749A (en) * | 1995-08-02 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Method for the production of fibers and materials having enhanced characteristics |
US5711970A (en) * | 1995-08-02 | 1998-01-27 | Kimberly-Clark Worldwide, Inc. | Apparatus for the production of fibers and materials having enhanced characteristics |
US5807795A (en) * | 1995-08-02 | 1998-09-15 | Kimberly-Clark Worldwide, Inc. | Method for producing fibers and materials having enhanced characteristics |
US5811178A (en) * | 1995-08-02 | 1998-09-22 | Kimberly-Clark Worldwide, Inc. | High bulk nonwoven sorbent with fiber density gradient |
US6062838A (en) * | 1995-11-30 | 2000-05-16 | Rieter-Automatik Gmbh | Melt spinning apparatus |
US6176696B1 (en) | 1995-11-30 | 2001-01-23 | Rieter-Automatik Gmbh | Melt-spinning apparatus |
US5913329A (en) * | 1995-12-15 | 1999-06-22 | Kimberly-Clark Worldwide, Inc. | High temperature, high speed rotary valve |
US6579480B1 (en) | 1998-05-08 | 2003-06-17 | Kimberly-Clark Worldwide, Inc. | Method of maintaining an exterior of an operating die system |
US6164948A (en) * | 1998-05-08 | 2000-12-26 | Kimberly-Clark Worldwide, Inc. | Extrusion die system with removable insert |
US6966762B1 (en) * | 1999-04-23 | 2005-11-22 | Rieter Perfojet | Device for opening and distributing a bundle of filaments when producing a nonwoven textile web |
US6379136B1 (en) * | 1999-06-09 | 2002-04-30 | Gerald C. Najour | Apparatus for production of sub-denier spunbond nonwovens |
US6705852B2 (en) * | 2000-06-21 | 2004-03-16 | Toray Engineering Company, Limited | Melt spinning apparatus |
US7780904B2 (en) | 2001-04-06 | 2010-08-24 | Mitsui Chemicals, Inc. | Method and apparatus for manufacturing nonwoven fabric |
US8057205B2 (en) | 2001-04-06 | 2011-11-15 | Mitsui Chemicals, Inc. | Apparatus for manufacturing nonwoven fabric |
US20030178741A1 (en) * | 2001-04-06 | 2003-09-25 | Minoru Hisada | Production method and device for nonwoven fabric |
US20100196525A1 (en) * | 2001-04-06 | 2010-08-05 | Minoru Hisada | Method and apparatus for manufacturing nonwoven fabric |
US7384583B2 (en) * | 2001-04-06 | 2008-06-10 | Mitsui Chemicals, Inc. | Production method for making nonwoven fabric |
US20070284776A1 (en) * | 2001-04-06 | 2007-12-13 | Mitsui Chemicals, Inc. | Method and apparatus for manufacturing nonwoven fabric |
FR2825381A1 (en) * | 2001-05-31 | 2002-12-06 | Rieter Perfojet | INSTALLATION FOR PRODUCING A NON-WOVEN, VERY REGULAR WEIGHT TABLECLOTH |
WO2002097182A1 (en) * | 2001-05-31 | 2002-12-05 | Rieter Perfojet | Installation for producing a nonwoven web with very uniform weight |
US20040219242A1 (en) * | 2001-05-31 | 2004-11-04 | Rosario Maggio | Installation for producing a nonwoven web with very uniform weight |
US6974316B2 (en) | 2001-05-31 | 2005-12-13 | Rieter Perfojet | Installation for producing a nonwoven web with very uniform weight |
US6783722B2 (en) | 2001-09-26 | 2004-08-31 | Bba Nonwovens Simpsonville, Inc. | Apparatus and method for producing a nonwoven web of filaments |
US20030057586A1 (en) * | 2001-09-26 | 2003-03-27 | Bba Nonwovens Simpsonville, Inc. | Apparatus and method for producing a nonwoven web of filaments cross-reference to related application |
US20050023711A1 (en) * | 2002-02-07 | 2005-02-03 | Nordson Corporation | Method for manufacturing thermoplastic nonwoven webs and laminates |
US6799957B2 (en) | 2002-02-07 | 2004-10-05 | Nordson Corporation | Forming system for the manufacture of thermoplastic nonwoven webs and laminates |
US7476350B2 (en) | 2002-02-07 | 2009-01-13 | Aktiengesellschaft Adolph Saurer | Method for manufacturing thermoplastic nonwoven webs and laminates |
US20030147982A1 (en) * | 2002-02-07 | 2003-08-07 | Nordson Corporation | Forming system for the manufacture of thermoplastic nonwoven webs and laminates |
US8333918B2 (en) | 2003-10-27 | 2012-12-18 | Kimberly-Clark Worldwide, Inc. | Method for the production of nonwoven web materials |
US20050087287A1 (en) * | 2003-10-27 | 2005-04-28 | Lennon Eric E. | Method and apparatus for the production of nonwoven web materials |
US20050107530A1 (en) * | 2003-11-14 | 2005-05-19 | Sudhin Datta | Transparent and translucent crosslinked propylene-based elastomers, and their production and use |
US8013093B2 (en) | 2003-11-14 | 2011-09-06 | Exxonmobil Chemical Patents Inc. | Articles comprising propylene-based elastomers |
US7928165B2 (en) | 2003-11-14 | 2011-04-19 | Exxonmobil Chemical Patents Inc. | Transparent and translucent crosslinked propylene-based elastomers, and their production and use |
US20050107529A1 (en) * | 2003-11-14 | 2005-05-19 | Sudhin Datta | Articles comprising propylene-based elastomers |
US7666343B2 (en) | 2006-10-18 | 2010-02-23 | Polymer Group, Inc. | Process and apparatus for producing sub-micron fibers, and nonwovens and articles containing same |
US20100120314A1 (en) * | 2006-10-18 | 2010-05-13 | Polymer Group, Inc. | Apparatus for producing sub-micron fibers, and nonwovens and articles containing same |
US8512626B2 (en) | 2006-10-18 | 2013-08-20 | Polymer Group, Inc. | Process for producing nonwovens and articles containing submicron fibers |
US8962501B2 (en) | 2006-10-18 | 2015-02-24 | Polymer Group, Inc. | Nonwovens and articles containing submicron fibers |
US7931457B2 (en) | 2006-10-18 | 2011-04-26 | Polymer Group, Inc. | Apparatus for producing sub-micron fibers, and nonwovens and articles containing same |
US20110147301A1 (en) * | 2006-10-18 | 2011-06-23 | Polymer Group, Inc. | Nonwovens and articles containing submicron fibers |
US20080093778A1 (en) * | 2006-10-18 | 2008-04-24 | Polymer Group, Inc. | Process and apparatus for producing sub-micron fibers, and nonwovens and articles containing same |
US20100062672A1 (en) * | 2006-12-15 | 2010-03-11 | Fare' S.P.A. | Apparatus and process for the production of a non-woven fabric |
US8591213B2 (en) | 2006-12-15 | 2013-11-26 | Fare' S.P.A | Apparatus and process for the production of a non-woven fabric |
US7951732B2 (en) | 2007-01-26 | 2011-05-31 | Exxonmobil Chemical Patents Inc. | Elastomeric laminates for consumer products |
US20080182116A1 (en) * | 2007-01-26 | 2008-07-31 | Narayanaswami Raja Dharmarajan | Elastomeric laminates for consumer products |
US20080230943A1 (en) * | 2007-03-19 | 2008-09-25 | Conrad John H | Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit |
US8246898B2 (en) * | 2007-03-19 | 2012-08-21 | Conrad John H | Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit |
US7762800B2 (en) * | 2007-06-29 | 2010-07-27 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Apparatus for making a spunbond web |
US20090004313A1 (en) * | 2007-06-29 | 2009-01-01 | Hans-Georg Geus | Apparatus for making a spunbond web |
US20090053959A1 (en) * | 2007-08-21 | 2009-02-26 | Sudhin Datta | Soft and Elastic Nonwoven Polypropylene Compositions |
EP3581373A1 (en) | 2012-10-16 | 2019-12-18 | AVINTIV Specialty Materials Inc. | Multi-zone spinneret, apparatus and method for making filaments and nonwoven fabrics therefrom |
WO2014145608A1 (en) | 2013-03-15 | 2014-09-18 | The Procter & Gamble Company | Packages for articles of commerce |
EP2778270A1 (en) | 2013-03-15 | 2014-09-17 | Fibertex Personal Care A/S | Nonwoven substrates having fibrils |
WO2014150434A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Nonwoven substrates |
WO2014150316A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Wipes with improved properties |
WO2014151480A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Methods for forming absorbent articles with nonwoven substrates |
DE102014103393A1 (en) | 2013-03-15 | 2014-09-18 | The Procter & Gamble Company | nonwoven substrates |
WO2014150303A1 (en) | 2013-03-15 | 2014-09-25 | The Procter & Gamble Company | Absorbent articles with nonwoven substrates having fibrils |
WO2016192097A1 (en) | 2015-06-05 | 2016-12-08 | Exxonmobil Chemical Patents Inc. | Spunbond fabrics comprising propylene-based elastomer compositions and methods thereof |
US10844529B2 (en) | 2016-05-02 | 2020-11-24 | Exxonmobil Chemicals Patents Inc. | Spunbond fabrics comprising propylene-based elastomer compositions and methods for making the same |
US20180105956A1 (en) * | 2016-10-18 | 2018-04-19 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Method and apparatus for making a fiber fleece |
US11306422B2 (en) * | 2016-10-18 | 2022-04-19 | Reifenhaeuser Gmbh & Co Kg Maschinenfabrik | Method for making a fiber fleece |
CN110541206A (en) * | 2018-05-28 | 2019-12-06 | 赖芬豪泽机械工厂有限及两合有限公司 | Apparatus and method for making spunbond nonwoven fabrics from continuous filaments |
US11066766B2 (en) * | 2018-05-28 | 2021-07-20 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Manufacture of spunbond from continuous filaments |
US11365498B2 (en) * | 2018-05-28 | 2022-06-21 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Making spunbond from continuous filaments |
WO2020139492A1 (en) | 2018-12-27 | 2020-07-02 | Exxonmobil Chemical Patents Inc. | Propylene-based spunbond fabrics with faster crystallization time |
WO2022087250A1 (en) | 2020-10-22 | 2022-04-28 | Exxonmobil Chemical Patents Inc. | Carbon fibers and related continuous production methods |
WO2022108973A1 (en) | 2020-11-23 | 2022-05-27 | Exxonmobil Chemical Patents Inc. | Metallocene polypropylene prepared using aromatic solvent-free supports |
EP4124685A1 (en) * | 2021-07-30 | 2023-02-01 | Ramina S.R.L. | Plant for producing non-woven fabric |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4820142A (en) | Apparatus for making a spun-filament fleece | |
US4812112A (en) | Apparatus for making a spun fleece from endless synthetic-resin filament | |
US4851179A (en) | Method of operating a fleece-making apparatus | |
US5766646A (en) | Apparatus for making a fleece from continuous thermoplastic filaments | |
US5460500A (en) | Apparatus for producing a nonwoven spun-filament web of aerodynamically stretched filament of a plastic | |
US4692106A (en) | Apparatus for stretching the individual strands of a bundle of fibers or threads | |
US6932590B2 (en) | Apparatus for the continuous production of spun-bond web | |
US5814349A (en) | Apparatus for the continuous production of a spun-bond web | |
US4838774A (en) | Apparatus for making a spun-filament fleece | |
US6183684B1 (en) | Apparatus and method for producing non-woven webs with high filament velocity | |
US3787195A (en) | Apparatus for the production of sheets or mats from fibers of thermoplastic material | |
ITMI940623A1 (en) | PROCEDURES AND DEVICES FOR THE MANUFACTURE OF A TWO-DIMENSIONAL VEIL PRODUCT OBTAINED DIRECTLY IN THE SPINNING | |
US5800840A (en) | Apparatus for producing a spun-bond web from thermosplastic endless filaments | |
US11365498B2 (en) | Making spunbond from continuous filaments |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: REIFENHAUSER GMBH & CO. MASCHINENFABRIK, SPICHER S Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BALK, HERMANN;REEL/FRAME:004812/0448 Effective date: 19871106 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20010411 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |